Perhaps this is simply a case of the DFI motherboard being picky (it's the source of the instability with the zen, fails to post 4 out of 5 times with this PSU). It's important to note that the 300W zen does NOT have PCI-E power connector, I had to use a molex adapter. Not sure if that makes any difference.

Looking at a lot of the system specs posted here, am I crazy to think that I could run a Crossfire setup with this PSU?

I/m sorry butI don't know what I am drawing off the power supply with my current config, but this new build seems to be half as loud as my old rig. I don't evn hear the power supply fan, and it is closer to my ears as the case sits on my desk (right to the left of my keyboard I mifgt add).

to be honest, i think that the issue would be that the Bestec power supplies just die after about 3 years. no joke. i've gone through tons of them, because they simply don't last. i've also replaced a few for some friends.

So far everything seems to run nice (1 month of running).
I still plan to replace the psu by a more silent and powerful one.
When you spent so much cash for other stuff, it's a bit a pity to use a "vulgar" earthwatt .
But my quattro was making too much noise (high pitched) , so that's a temporary solution.

Depending on your board and processor, you need a min of 350 watts to power up a machine and run it stable. I have a AMD QUAD 9950, Gigabyte 140 Watt board, Dual SATA 500 GIG HD Raided, 6 GIG of RAM, 2 SATA DVD/RW and I run a 575 Watt RAIDMAX PWS.

Anyone with a 300w power supply that is pushing alot of juice, multiple hard drives, ect. Post your system specs and maybe we can get rid of these rumors that you need a 400w+ power supply to run a high performance rig.

this 5 year old post isn't even old. I am on 300w, non-pfc for 16300 hours:

it is indeed a crock of crap to think all the watts are needed from these double numbered hipocrates..its like a turbo vtec ya know? just write big numbers... people are stupid. PFC is about the best upgrade going and correctly sizing the watts needed...and even then, a ups external to a regular proven "classic" is a time proven written winner...

Depending on your board and processor, you need a min of 350 watts to power up a machine and run it stable. I have a AMD QUAD 9950, Gigabyte 140 Watt board, Dual SATA 500 GIG HD Raided, 6 GIG of RAM, 2 SATA DVD/RW and I run a 575 Watt RAIDMAX PWS.

Whats you point?
The parts you mention doesn't use anywhere near 350W.
Try measuring how much you machine actually uses.

Perfection. Thanks to all the contributors, I'm going to save a lot of money buying a 300-450w psu. I've learned a lot just reading the articles and forums for a few days. I just wished more people updated the forums and articles, most of them are from 07 and earlier...

had no problems, then this past sunday night it tanked on me, quickly too. thanks to newegg however, for getting the corsair at my doorstep by 3:30 tuesday afternoon.

I am surprised though, the 300W seemed to be stressed a little after the upgrade, running louder than it had been...system is nearly dead quite with the corsair 400w...i wanted the VX420 i think it was, but no one had it...as much as i wanted modular, i couldn't justify the price, so i just stuffed all the cables above the optical drive.

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